drm_mode_setcrtc(9)

💖 drm_mode_setcrtc(9) 💖

okay bestie, welcome to the Kernel API Manual — this is the page for drm_mode_setcrtc, and it's giving "let's set up a CRTC configuration" energy. no cap. ✨

🎀 NAME 🎀

drm_mode_setcrtc — set CRTC configuration 💅

🌸 SYNOPSIS 🌸

int drm_mode_setcrtc (struct drm_device *dev , void *data , struct drm_file *file_priv );

✨ ARGUMENTS ✨

• dev — the drm device for the ioctl, aka the main-character device this call is happening on. 👑
• data — the data pointer for the ioctl, literally carrying the payload. 🎀
• file_priv — the drm file for the ioctl call, the file-side bestie for this operation. 🫶

🦋 DESCRIPTION 🦋

okay so this function builds a brand-new CRTC configuration based on what the user requested. it's called by the user via an ioctl — so yes, user space asks, and this function handles the setup. periodt. 💫

🌈 RETURN 🌈

returns 0 on success, and a negative errno on failure. slay when it works, negative number when it doesn't. 😭

🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/drm_crtc.c overview(9) — the whole file overview situation. 👀
• drm_crtc_from_index(9)
• standard CRTC properties(9)
• drm_crtc_init_with_planes(9)
• drmm_crtc_init_with_planes(9)
• drm_crtc_cleanup(9)
• drm_mode_getcrtc(9)
• drm_mode_set_config_internal(9)
• drm_crtc_check_viewport(9)
• drm_crtc_create_scaling_filter_property(9)
• drm_crtc_in_clone_mode(9)

and that's the page, bestie 💖 this one came from ./drivers/gpu/drm, with the date October 2026 — periodt. 🎀✨